On the Instagram platform, “FC” commonly functions as an abbreviation for “fake comment.” This designation is typically applied to comments perceived as disingenuous, insincere, or purely intended to manipulate engagement metrics. For example, a user might label a generic comment such as “Great post!” left by an account with questionable authenticity as “FC.”
The use of the term highlights a growing awareness among Instagram users regarding the prevalence of inauthentic engagement. Identifying such comments is a mechanism for filtering genuine interactions and potentially mitigating the influence of accounts engaged in deceptive practices to inflate their perceived popularity or reach. Historically, the rise of “FC” correlates with increased sophistication in bot activity and engagement farming tactics employed on the platform.